The UK government’s climate action plan is unlawful, the high court has ruled, as there is not enough evidence that there are sufficient policies in place to reduce greenhouse gas emissions.

The energy secretary, Claire Coutinho, will now be expected to draw up a revised plan within 12 months. This must ensure that the UK achieves its legally binding carbon budgets and its pledge to cut emissions by more than two-thirds by 2030, both of which the government is off track to meet.

The environmental charities Friends of the Earth and ClientEarth took joint legal action with the Good Law Project against the Department for Energy Security and Net Zero (DESNZ) over its decision to approve the carbon budget delivery plan (CBDP) in March 2023.